ACS - Airfield Construction Service

AFC - Air Force Cross

AM - Air Ministry

AMWD - Air Ministry Works Department

AOA - Air Officer Administration

AOC - Air Office Commanding

ASDIC - Anti-Submarine Detection Investigation Committee

ASR - Air Sea Rescue

AVM - Air Vice Marshall

BBC - British Broadcasting Corporation

CBE - Commander of the British Empire

CROW - Countryside and Rights of Way Act

DSO - Distinguished Service Order

ELINT - Electronic signals Intelligence

F/Lt - Flight Lieutenant

GR - General Reconnaissance

HF/DF - High Frequency Direction Finder

HQ - Headquarters

HQCC - Headquarters Coastal Command

KB - Knight of the Bath

KBE - Knight Commander of the Most Excellent Order of the British Empire

MT - Motor Transport

NAAFI - Navy, Army and Air Force Institutes

OBE - Officer of the Most Excellent Order of the British Empire

ORB - Operations Record Book

OS - Ordnance Survey

PDC - Post Departure Centre

P/O - Pilot Officer

RAF - Royal Air Force

RAFVR - Royal Air Force Volunteer Reserve

RFC - Royal Flying Corps

RNAS - Royal Naval Air Service

RUSBC - Recovery Unit Small Bomb Components

S/Ldr - Squadron Leader

SASO - Station Administrative Senior Officer

SIGINT - Signals Intelligence

SSSI - Site of Special Scientific Interest

U-Boat - the anglicised version of the German word U-Boot, a shortening of Unterseeboot, which means "undersea boat" or submarine.

UK - United Kingdom

USAAF - United States Army Air Forces

WAAF - Women's Auxiliary Air Force

WT - Wireless Telegraphy

WW2 - World War 2